Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 335/30-20 | 325/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.91 (709) | 27.68 (703) | -0.24 (-6) -0.8% |
| Width inches (mm) | 13.19 (335) | 12.8 (325) | -0.39 (-10) -3% |
| Circum. inches (mm) | 87.69 (2227.39) | 86.95 (2208.54) | -0.74 (-18.85) -0.8% |
| Sidewall Height inches (mm) | 3.96 (100.5) | 3.84 (97.5) | -0.12 (-3) -3% |
| Revolutions per mile (km) | 722.52 (448.96) | 728.69 (452.79) | 6.17 (3.83) 0.9% |
325/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.83 mph (31.91 km/h) |
| 25 mph (40.23 km/h) | 24.79 mph (39.89 km/h) |
| 30 mph (48.28 km/h) | 29.75 mph (47.87 km/h) |
| 35 mph (56.33 km/h) | 34.7 mph (55.85 km/h) |
| 40 mph (64.37 km/h) | 39.66 mph (63.83 km/h) |
| 45 mph (72.42 km/h) | 44.62 mph (71.81 km/h) |
| 50 mph (80.47 km/h) | 49.58 mph (79.79 km/h) |
| 55 mph (88.51 km/h) | 54.53 mph (87.77 km/h) |
| 60 mph (96.56 km/h) | 59.49 mph (95.74 km/h) |
| 65 mph (104.61 km/h) | 64.45 mph (103.72 km/h) |
| 70 mph (112.65 km/h) | 69.41 mph (111.7 km/h) |
| 75 mph (120.7 km/h) | 74.37 mph (119.68 km/h) |
| 80 mph (128.75 km/h) | 79.32 mph (127.66 km/h) |
| 85 mph (136.79 km/h) | 84.28 mph (135.64 km/h) |
| 90 mph (144.84 km/h) | 89.24 mph (143.62 km/h) |
| 95 mph (152.89 km/h) | 94.2 mph (151.59 km/h) |
| 100 mph (160.93 km/h) | 99.15 mph (159.57 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1854 | 2154 | 2320 | 2423 | 2533 | 2612 | 2699 | 2801 | 2943 | 3085 | 3243 | 3369 | 3598 | 3851 | 4048 | 4174 | 4245 | 4506 | 4869 | 5658 |
Better Fuel Economy Factory Ratios Increased Power
